limits calculus 1.1 and 1.2. derivatives problem: find the area of this picture. 9/18/2015 – lo:...
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Limits
Calculus 1.1 and 1.2
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DerivativesProblem: Find the area of this picture.
04/19/23 – LO: Limits - Determine if they exist.#102 p54 5, 8, 12, 15-24, 26, 28
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Intro to CalculusDerivativesProblem: Find the area of this picture.
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Intro to CalculusDerivativesProblem: Find the area of this picture.
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The Tangent Line Problem
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The Tangent Line Problem
x∆x = distance from x
x + ∆x 1∆x = 4
5
yf(x)
y + ∆yf(x+∆x)
f(1)
f(5)
∆y=2
=10
∆y = 8
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The Tangent Line Problem
f(1 + 4)
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The Tangent Line Problem
xx
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Develop a habit to try 3 approaches to problem solving.
1. Numerical ApproachConstruct a table of values.
2. Graphical ApproachDraw a graph.
3. Analytical ApproachUse algebra or calculus.
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3 Limits that FAIL
1. Behavior that is different from Right and Left
As x creeps to the limit, the function goes towards different values from the right and the left.
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3 Limits that FAIL
2. Unbounded Behavior
Function goes to positive or negative infinite.
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3 Limits that FAIL
3. Oscillating Behavior
Trig functions with x in the denominator.
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Limits that FAIL
Common types of behavior where the limit does not exist.
• f(x) approaches different values from left and right.
• f(x) increase or decrease without bound as x approaches c.
• f(x) oscillates between 2 different values as x approaches c.
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0.204 0.2004 0.2 0.1999 0.1996 0.196
= 0.2
1. Put function into Graph mode (MENU 5).2. Verify appropriate window (V-Window)3. Draw graph - Analyze graph at limit4. Use TRACE to complete table
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1. Put function into Graph mode (MENU 5).2. Verify RAD mode (Shift - SETUP)3. V-Window to TRIG4. Draw graph - Analyze graph at limit5. Use TRACE to complete table
0.99833 0.99998 0.99999 0.99999 0.99998 0.99833
= 1
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x
f(x)
10.9990.990.9 1.001 1.01 1.1
IND F0.66730.67330.7340 0.6660 0.6600 0.6015
= 0.667 = 2/3
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= 1 = 4
= 2 = 4
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Limit does notexist. The functionapproaches 1 fromthe right and -1 fromthe left as xapproaches 2.
Limit does notexist. The functiondecreases from theleft without bound and increases fromthe right without bound as x approaches 5.
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Yes. f(1) = 2
(b) No, the limit does not exist. As the x approaches 1, the function approaches 1 from the right but approaches 3.5 from the left.(c) No, the value does not exist. The function is undefined when x = 4.(d) Yes. f(4) = 2.
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At x = -3, the function does not exist.
At x = 2, the function DOES exist.
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